SODIAL Overlock Edge Presser Foot Small Guide For Singer Brother Pfaff Janome This foot is used with medium weight fabrics, is generic, universal fitting, fits many Singer models, Janome models, Babylock models, Bernina models, Pfaff models and some other domestic sewing machines This foot helps regulate the thread tension allowing the needle to lie flatter; Use with medium weight fabrics. This foot is equipped with a pin which acts in a similar manner as the needle finger on a serger. When the pin is placed along the edge of the fabric, it reinforces the edge as the needle forms, preventing tunneling of the fabric. The right side of the sole is cut away so the needle edge of the fabric can move smoothly under the foot without any unnecessary pulling or needle.